Effect of welding nugget diameter on the fatigue strength of the resistance spot welded joints of different steel sheets

Vural, M.; Akkus, AHMET; Eryuerek, B.

doi:10.1016/j.jmatprotec.2006.02.026

Effect of welding nugget diameter on the fatigue strength of the resistance spot welded joints of different steel sheets

Atıf İçin Kopyala

Vural M., Akkus A., Eryuerek B.

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, cilt.176, ss.127-132, 2006 (SCI-Expanded)

Yayın Türü: Makale / Tam Makale
Cilt numarası: 176
Basım Tarihi: 2006
Doi Numarası: 10.1016/j.jmatprotec.2006.02.026
Dergi Adı: JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
Sayfa Sayıları: ss.127-132
Sivas Cumhuriyet Üniversitesi Adresli: Hayır

Özet

This paper presents an experimental study on the fatigue strength of resistance spot welded galvanized steel sheets and austenitic stainless steel (AISI 304) sheets. The sheet materials were joined by using resistance spot welding as a lap joint. Material combination and nugget diameter were selected as experimental parameters. The high cycle fatigue tests were performed and S-N curves were obtained for each specimen. The results show that galvanized steel sheet combination has the highest fatigue limit. The sheet combination which has the minimum fatigue limit is galvanized-AISI 304 sheet combination. For austenitic stainless steel-galvanized steel sheet joint, the measurements of the nugget diameter and crack length were performed after fatigue tests. Crack growth rate of the spot welded galvanized-AISI 304 joining type is slower than that of base metals given in literature. C and in coefficients of Paris-Erdogan equation for spot welded AISI 304-galvanized steel sheet joints were obtained. (c) 2006 Elsevier B.V. All rights reserved.